Department of Public Health, Chicago: Some Effects of Dry Air on the Human Body. Vol. XVII, No. 49; Vol. XXV, Old Series, No. 1352, Dec. 8, 1923.
2.
BlakeDean: Some of the Functions of Humidity. California and Western Med., 24: 631–632 (May), 1926.
3.
WeaverDaniel: Why Colds?J. of Ind. St. Med. Soc., Jan., 1931.
4.
YatesA. Lowndes: Activity of Ciliary Epithelium. Read at Combined Summer Meetings, Sec. of Laryngol. and Otol., Royal Society of Medicine, London, 39: 56 (June 26–28), 1924.
5.
McDonaldJ. L.LeisureC. E.LennemanE. E.: New Principles in the Control of the Activity of Ciliated Epithelium. Department of Physiology, Creighton University, Omaha, Neb.
6.
Ullman: Surgery and Dietetic Treatment and Its Relation to Nasal Pathology. Laryngo., 44: 2, 1934.
7.
BarrowW. H.: Group Susceptibility to Acute Upper Respiratory Tract Infections. The Journal, p. 920, Sept. 18, 1920.
8.
TownsendJ. G.: U. S. Public Health Reports. 1924.
9.
HuttonR. M.: Some Queries About Respiratory Disease in Industry. J. Ind. Hygiene, 10: 297–304 (Nov.), 1928.
10.
WoodsHilda M.: Climatic Conditions and Pneumonia. The Lancet, p. 539, March 17, 1928.
11.
SperryFrederick N.: The Common Cold. New EnglandJ. of Med., 202: 632–636 (March 27), 1930.
12.
CheneyVolney S.: The Common Cold: Etiology, Prevention and Treatment. Am. J. of Pub. Health, 18: 15–20 (Jan.), 1928.
13.
GilchristJoseph A.WilsonMary J.: Staphylococcic Infection in Diabetes McLlitus. The Can. Med. J., 30: 353, 1934.
14.
Lode and Jezerski's Experiment on Animals (Taken from paper by Walter Wells: Influence of the Atmosphere in the Causation of Colds.)S. Med. J., 18: 139–143 (Feb.), 1925.
15.
MillsClarence A., Professor of Experimental Medicine, University of Cincinnati, by special written communication.
16.
KnudsenV. O., University of California, Los Angeles: The Absorption of Sound in Air, in Oxygen and in Nitrogen: Effects of Humidity and Temperature. Aug. 2, 1933.
17.
HajekM.: Nasal Accessory Sinuses. C. V. Mosby Co., Vol. 1, 5th Ed., page 92.